Here are all the possible meanings and translations of the word radio.

Princeton's WordNet(5.00 / 1 vote)Rate this definition:

an electronic receiver that detects and demodulates and amplifies transmitted signals

radio, wireless(adj)

a communication system based on broadcasting electromagnetic waves

radio(verb)

indicating radiation or radioactivity

"radiochemistry"

radio(verb)

transmit messages via radio waves

"he radioed for help"

Wiktionary(5.00 / 1 vote)Rate this definition:

radio(Noun)

The technology that allows for the transmission of sound or other signals by modulation of electromagnetic waves.

radio(Noun)

A device that can capture (receive) the signal sent over radio waves and render the modulated signal as sound.

radio(Noun)

A device that can transmit radio signals.

radio(Noun)

The continuous broadcasting of sound recordings via the Internet in the style of traditional radio.

radio(Verb)

To use two-way radio to transmit (a message) (to another radio or other radio operator).

I think the boat is sinking; we'd better radio for help. / I radioed him already. / Radio the coordinates this time. / OK. I radioed them the coordinates.

radio(Verb)

To order or assist (to a location), using telecommunications.

Origin: From radius.

Freebase(0.00 / 0 votes)Rate this definition:

Radio

Radio is the wireless transmission of signals through free space by electromagnetic radiation of a frequency significantly below that of visible light, in the radio frequency range, from about 30 kHz to 300 GHz. These waves are called radio waves. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space.
Information, such as sound, is carried by systematically changing some property of the radiated waves, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.

U.S. National Library of Medicine(0.00 / 0 votes)Rate this definition:

Radio

The transmission and reception of electric impulses or signals by means of electric waves without a connecting wire, or the use of these waves for the wireless transmission of electric impulses into which sound is converted. (From Webster's 3d)

Suggested Resources(0.00 / 0 votes)Rate this definition:

radio

Song lyrics by radio -- Explore a large variety of song lyrics performed by radio on the Lyrics.com website.